Cylinder hone



oct. 24, 1933. w E. HEUER 1,931,986

CYLINDER HONE Filed Aug. 21. 1930 2 Sheets-Sheet 1 35 amodifled Patented Oct. 24, 1933-A y 1.931,9 culmina nous William E. Heuer, Toledo, Ohio, Hall Manufacturingcompony,

corporation of Ohio assigner to The Toledo, Ohio, a

Application um zi, 193g. serial Nc. 416,139

This invention relates to devices particularly intended for honing the internal walls of cylinders, and which have the 'honing members adjustableto adapt them to have a progressive honing action within predetermined limits and to be collapsed for insertion into and removal from the cylinder.

An object of the invention is the provision of a simple, improved and eilicient devicelof this 1c character which is ccpcmc cf being miticny adjusted to the particular job in hand, and then to operate without any further adjustment until the desired depth of honing or material removing operation has been completed.

Another object of the invention is the provision in a device of this character of a single Aspring for acting uniformly on all of the honing members 'to communicate a corresponding outward radial pressure thereto during the effective working action of the device. lFurther objects and advantages of the invention will be apparent from the following detailed description thereof.

- The invention is fully described-inthe ,following specification, and while in its broader aspect it is capable of embodiment in numerous forms,

two embodiments accompanying drawings,'

Figure 1 vis a side elevation of ing theinvention,y with parts broken away;

in which,-

a device embodyso is an enlarged centralsectional view thereof, with v Fig. 3 is a cross-section on the line3-3 in Fig. 1; Fig. 4 is a cross-section on .the line 4-4 in Fig.- 2, with a part broken away;

. Fig. 5 isa central longitudinal sectional view of form of the device, with parts in full;

and Figs. 6 and .-'1 are cross-sections on the lines 6'6 and 'Le-7, respectively, in Fig. 5.

parts broken away;

frieren-ing to 'the drawings, 1 designates thehoning tool which, in the illustrated embodiment,

4o includes a cylindrical body 2 having a plurality of abrading elements 3, in the present, ,instance four-in number, of elongated bar-form disposed in parallel relation to the body axis and mounted for radial movement ingrooves 4 provided therein in equidistaritly spaced relation therearound.

The abrading elements are mounted in U-shaped holders 5 and these holders extend at their ends beyond the ends of theelements 3 and of the body 3 and are engaged at each end of the body so by a respective elastic band 6, which serves to4 yieldingly retain the holders in retracted position in the body, as well understood in the art.

The body 2 has v lits inner end and such neck and body are provided axially therethrough with an opening 8 to the other thereof. thereof are illustrated in the a neck portion 7 extending from I vhas universal jointed is mounted for axial movements. The stem 9 is provided within the body 2 and near 'opposite ends thereof with reduced portions forming conically tapered surfaces 10 with the large ends thereof disposed toward the inner end of the body. A plurality of.pins 11, one for each holder 5, projects radially outward from 'each conical surface 10 of the stem through respective radial openings in the body-2 and into engagement at their outer ends with the inner sides of the respective holders 5. The outer ends of the pins 11'are preferably conical and engage within conical sockets 12 in the holders, but instead of seating concentrically in such sockets. are seated against one side only thereof, which, in the present instance, is the outer side with respect to the adjacent ends of the holders. In" other words, the pins of the two sets coact with opposite Asides of the respective recesses in the holders, so that the holders and abrading elements carried thereby will be permitted to have an automatic adjusting movement relative to the body to conform to any tapered irregularity or variance in diameter of a cylinder from one end This feature of the tool invention, but is granted Nov. 10,

in which la 4stem 9.

forms-no partof the present claimed in PatentNo. 1,831,112

It is apparent thatwhen the stem 9 is at the limit .of its upward or inward movement with re-l spect to the body, the pins 11 are at the limit of' their inward movements and permit a complete Icollapsing of the abrading elements relative to the body. Upon a downward or outward movementof the stem 9 relative to the body, the pins 11 are uniformly forced outwardly by coacticn of the respective tapered surfaces therewith and holders.l

A hollow drive shaft section 13 has universal joint connection with the outer end of the neck 7, as shown at 14, the ball end of the shaft sec-- tion 13, which forms oneV member of the Joint, being seated in a socket provided in the end of the neck 7 and retained therein by a ring 15, held in position by an inwardly flanged vnut 16 threaded on the neck. Rotation is imparted from i the shaft section 13 to the body neck 'l by pins 17 projecting radially from the ball member of thev shaft and ensasins in longitudinally dis. pod slots 18 in the neck.

The upper or outer end of the shaft section 13 connection 19 with a shaft section or spindle 20 adapted to be secured infthe los driving chuck of a suitable motor or shaft projecting therefrom, as is well understood in the art.

The double universal jointed connection of the drive means to which the spindle is connected.

A housing 21 encircles the neck 'l of the tool 1 and is threaded at its lower end to said neck, as shown at 22, Fig. 2, so as to permit the housing to be axially adjusted on the neck. This housing, in its present embodiment, is composed of the two members 23 and 24, which are threaded together in a secure manner to adapt" them to be turned in either direction as a unit. 'I'he housing 21 is provided with an internal annular recess 25 in surrounding relation to the neck '7, and a coiled expansion' spring.26 is mounted in this recess. The upper end thrust of the spring is transmitted to the upper end wall of the recess 25 through an interposed anti-friction bearing 27, and its lower end thrust is against a ringor stop member 28 that is mounted for axial floating movements in the recess, but which is normally held at the lower end of such recess by the action of the spring.

The ring 28 has connection with the stem 9` through a cross-pin 29 which is xed to said stem` 4and has its ends projected outwardly therefrom through registering longitudinally extending slots 30 in the neck 'l and anchored at their ends in said sleeve as may be occasioned by the rocking of the connection between the body neck 'l and drive shaft 13. 'Ihe sleeve 31 may be extended a desired distance above the housing 21 to facilitate handling the same by an operator, and has a hand-Wheel 33 fixed to its upper end to facilitate turning. The upper end of this wheelis provided with a circumferential surface 34 having therearound a graduated scale, as shown in Fig. 1, which registers with a point provided on a collar 35 which rests loosely on the upper end of the wheel and is splined to the shaft section 13 to turn therewith and move freely lengthwise thereof.

A rod 36 is in universal jointed connection at its lower end with the stem 9 and extends therefrom up through the hollow of the shaft section 13 to a point above the collar 35 where it is connected by a cross-pin 37 to a thrust-collar 38 that is slidingly mountedA on said shaft section. The pin 37 extends through longitudinally disposed slots 39 in the shaft section 13 to permit limited movements of the pin longitudinally of thel shaft. Loosely sleeved on the shaft section 13 between the collars 35 and 38 is a bearing block 40 which, in the present instance, is shown as having an arm 41 projecting therefrom radially of the shaft 11o-facilitate holding the tool part of the device during operation. In some cases, the arm 41 is employed to serve as one member of a'vertical guide for reciprocatory movements of the device, said arm for such purpose being extended between parallel guide bars. This arm, however, has nothing to do with the present invention.

A control lever 42 has its inner end forked and straddling the bearing block with its fork arms 43 mounted on coaxially alined fulcrumv studs 44 projecting from the block. Each arm 43 is provided on its upper yand lower edges with two setsl of opposed bearing surfaces, one set being designated a, a, and the other b, b, which coact with the opposed faces of the collars 35 and 38. The spacing of the surfaces a, a axially of the shaft is slightly greater than the spacing of the surfaces b, b, so that when the lever 42 is lowered, as shown in Fig. l', with the surfaces a, a, in contact with said collars, the upper collar 38 is raised slightly relative to the collar 34, carrying the rod 36 and stem 9 therewith and permitting a sumcient inward movement of the pins 11 and abrading members of the abrading tool to release the abrading members from the work suiciently to permit a'withdrawal of the tool therefrom. It is apparent that they collar 38 is free to follow the sleeve 31 and housing 21 during adjusting movements thereof in either direction lengthwise ofthe shaft, so that no matter what the radial adjustment of the abrading members may be, they will be permitted to have an outward movement from such adjustment by a movement of the lever 42 upward from the position shown in Fig. 1. I

In the use of this device, the abrading tool 1 is lowered into a cylinder to be honed with the honing elements collapsed sufficiently relative to the' body to permit free entry into the cylinder. Such collapsing is effected, partially at least, by the placing of the control handle 42 in its lowered position, which effects a raising of the control stem 9. When the tool has been thus iplaced within a cylinder, the control lever 42 is first raised to permit a lowering of the control stem 9.a predetermined extent, which lowering ordinarily places the stop collar 28 in'stop coaction with the coacting shoulder of the housing 21 and permits the abrading members to have contact with the wall of the cylinder. The operator, knowing the depth of material he wishes to remove from the interior of the cylinder, now grasps the hand-wheel 33 and turns it until the scale on such wheel, in cooperation with the point on the flxed collar 35, indicates the permissible depth of cut of the tool. This adjustment of the wheel 33 andthe connected housing 21 lowers the housing sufliciently on the body neck 7 with respect to the stop collar 28 to allow for the further expansion of the abrading members, as the work progresses, tosuit the maximum depth of removal of material from the cylinder wall desired for the particular job. It is apparent that the stop .shoulder of the housing 21 which coacts with the ,stop collar 28 -is now spaced from such collar and that as the honing progresses the abrading,

members/will be permitted to expand or move outwardly with respect to the body until the stop collar 28, under the expanding action of the spring 26, has lowered to stop engagement with suchshoulder. Whenvthe depth of material for which the tool has been adjusted has been removed from the cylinder, the driving of the tool is discontinued and the operator then lowers the control handle 42 to effect a raising of the stem It is apparent that I have provided a simple and efficient control for the abrading elements and that a single spring is employed for the expansion of all of the members. Furthermore, that in combination with the adjustment control, there is also a control for effecting a sudden release or contraction of the abrading elements from abrading coaction with the cylinder wall when it is desired to withdraw the tool from the cylinder after the completion of a job or for the purpose of inspection.

The form of the invention shown in Figs. 5, 6 and '7 is similar to that above described, except that the sleeve 31 and hand-control 33 positioned at a distance from the housing 21 are omitted and the housing grasped directly to effect a turning thereof. The hand-control feature for effecting a quick release of the abrading members from the work is also eliminated. In this arrangement, the adjusting housing, which is designated 50, has the top member 51 thereof, which corresponds to the member 24 of the first form, cut off so as to provide a top surface on which a circular series of graduations 52 -is provided and which register with a point 53 on the nut 16 ofthe universal joint 14.

The short shaft section 13 has a collar 54 threaded thereon near its upper end for adjustment lengthwise of the shaft section and mounted on the section above this collar and in swivel connection therewith is a collar 55, which is connected by across-pin 56, extending through longitudinal slots 57 in shaft section 13, to the upper end of the rod 36. The collars 54 and 55 are tied together to cause them to move together lengthwise of the shaft section and to prevent relative turning thereof about such section byreason of the collar 55 having a portion overhanging the collar 54 and provided with studs 58 projecting into an annular raceway 59 in the collar 54. An antifriction thrust bearing 60 is provided between the opposed end .thrust faces of said collar.

It -is apparent' that an adjustment of the collar 54 on the threaded portion of the shaft section 13 will cause movement of the collar 55 therewith axially of the shaft and impart acorresponding movement to the stem 9 so that an adjustment of v the abrading elements may be effected through an adjustment of said collars. In practice, the threaded connectionbetween the collar 54- and shaft section 13 is preferably such that a fractional turning of the collar 54von the shaft section, for instance a quarter turn, will impart the necessary longitudinal movement to .the stem 9 for the purpose desired.

Itis preferable to use the form of tool shown in Fig. 5 rather than that shown in Figs. 1 and 2, when a single cylinder is being honed, as this form is simpler and less expensive, and there is sufcient room on both sides of the tool to facilitate grasping and turning the collar 54 in effecting adjustment of the .stem 9. Usually, the collar 54 is provided with a projecting pin, not shown,

to facilitate turning of the same and the neces-` sary adjustment, as stated above, is obtained by giving the pin and collar a -quarter turn. If the device is of the multiple honing tooltype adapted for simultaneous honing of a plurality of cylinders, the tools are usually so close together that interference will be encountered in a rotary adjustment of the collar 54. In such case, it is preferable to employ the form of spindle control shown in Figs. l and 2 wherein it is merely necessary to move the handle 42 vertically to impart axial movement to the stem.

It is apparent that I have provided a simple and efficient tool which is capable of adjustment to effect a positive stopping of the expandingy movements of the abrading elements when a predetermined depth of material has been removed from a cylinder and that the tool is also provided with means independent of the gage means for the depth of cut for effecting a quick release of the abrading elements from abrading engagement with a cylinder wall and rendering the depthgaging means inoperative. It is apparent that `when the quick control means for the abrading elements is in position to permit a lowering of the stem 9 to operating position, such stem has floating movement within the tool for the limit of movement for which the depth gage means is adjusted.

I wish it understood that my invention is 'not limited to any specific construction, arrangement or form of the parts, as it is capable of numerous modifications and changes without departing from the spirit of the claims.

Having thus described my invention, what I claim as new and desire to secure by United States Letters Patent is:

1. In a tool of the class described, a body, a

drive shaft for said body in universal joint connection therewith, abrading elements carried by the body for expanding and collapsing movements relative thereto, means operable to expand and control the collapsing movements of said elements and having a control member movable axially through said body and shaft and jointed to correspond to the universal jointing of the body and shaft, means carried by the body for exerting yielding element expanding movements to said member and adjustable relative to the body to vary the limit of such expanding movements, and means carried by the shaft section and operable to move said member to permit said member to havet a predetermined element collapsing movemen 2. In a tool of the class described, a body, a

drive shaft for said body in universal joint connectionv therewith, a plurality of abrading elements carried by said body for expanding and collapsing movements relative thereto, means operable to expand said elements and control the ,collapsing movements thereof and having a control member movable axially in said body, means carried by the body at one end thereof for exerting yielding element-expanding movements to said member and' adjustable relative to the body to vary the limit of such expanding movements, and a control for said last mentioned means 4extendmg outwardly on said shaft a distance from said body, said control havingjointed connection with said adjustable means to permit the control to follow the universal movements of the shaft relative to said body. 4

WILLIAM E. HEUER. 

